x射线脉冲星导航:a hundred of 与hundreds of的区别

a hundred of 与hundreds of的区别 hundred of ,hundred后加不加S？ He was known as the hero of a hundred adventures He was known as the hero of a hundred adventures caugth in the middle of a hundred and five是什么意思？ hundred与hundreds还有hundreds of有什么区别? hundred与hundreds还有hundreds of有什么区别 Over a hundred applicants will be ___to a short list of five candidates. two hundred dollars ____ a large sum of money for me. hundred ,hundreds,hundred of,hundreds of...解释一下什么区别?